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Document Details
Document Type
:
Article In Journal
Document Title
:
Charge-state distributions of energetic He-4 ions backscattered from Kr gas target
Charge-state distributions of energetic He-4 ions backscattered from Kr gas target
Subject
:
physics
Document Language
:
English
Abstract
:
The energy dependence of the charge-state fractions of He-4 ions backscattered at 90 degrees from Kr gas target atoms was investigated for impact energies varying from 0.4 to 2.0 MeV. The fractions were measured using a small electrostatic post-accelerator system. The measured fractions were compared with previous literature results for backscattered He-4 ions from solid targets, and with results for transmitted He-4 ions through foils. It is observed that the charge-state distributions are strikingly identical for the Kr gas and solid targets, within the investigated energy range. The fractions were also found to be insensitive to the incident ion charge-state within the investigated energy range. The findings suggest that, for both gas and solid targets, any memory of the incident ion charge-state is lost during the early stages of the interactions and that the final charge-state distribution is determined during the final stages. A semi-classical theoretical approach based on the early Bohr theory and suggested by Bianconi et al. [18] was attempted and accounted reasonably well for the experimental results.
ISSN
:
0168-583X
Journal Name
:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATO
Volume
:
271
Issue Number
:
1
Publishing Year
:
1433 AH
2012 AD
Article Type
:
Article
Added Date
:
Tuesday, July 25, 2017
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
H Sa'adeh
Sa'adeh, H
Investigator
Doctorate
R Ali,
Ali, R Ali,
Researcher
Doctorate
D.E Arafah
Arafah, D.E
Researcher
Doctorate
Files
File Name
Type
Description
42263.pdf
pdf
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